https://bugs.documentfoundation.org/show_bug.cgi?id=103588
Bug ID: 103588
Summary: With experimental Harfbuzz common layout, Formula
editor having noticeable fall back issues
Product: LibreOffice
Version: 5.3.0.0.alpha0+ Master
Hardware: All
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: graphics stack
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: vstuart.fo...@utsa.edu
Description:
On current Windows build of master with SAL_USE_COMMON_LAYOUT environment set,
running the Math module Formula editor is having some issues with font fall
back for OpenSymbol fonts.
Steps to Reproduce:
On Windows 10 Pro 64-bit en-US with
Version: 5.3.0.0.alpha1+
Build ID: f19f88a0d49859eb714711cac72793f09f5f7d5c
CPU Threads: 8; OS Version: Windows 6.2; UI Render: GL;
TinderBox: Win-x86@62-merge-TDF, Branch:MASTER, Time: 2016-10-29_06:17:53
Locale: en-US (en_US); Calc: CL
1. enable HarfBuzz based Common Layout with env variable
2. OpenGl rendering enabled
3. open a new Formula from Start Center
4. from the Element Dock (panel on the left) select Examples from dropdown list
5. select the f(x) with summation (4th sample of the list)
6. selecting the formula writes StarMath markup "f ( x ) = sum from { { i = 0 }
} to { infinity } { {f^{(i)}(0)} over {i!} x^i}" into the lower Fromula
editor's panel. And the formula will render to the Preview Window.
7. Zoom-out or Zoom-in or "Show All" to scale the formula preview
Actual Results:
Preview will sometimes show the OpenGL symbols, but sometimes shows the symbols
in what appears to be Segoe UI -- but for dfferent code points.
Similar with other example formulas--wrong font for symbol codepoints.
Attaching screen clips.
Expected Results:
No visual glitch, and canvas of the Preview window reliably render the
OpenSymbol
Reproducible: Always
User Profile Reset: Yes
Additional Info:
Setting a font substitution for OpenSymbol with Asana Math or STIX (from Tools
-> Options -> Fonts) does not exhibit the issue.
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101
Firefox/49.0
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